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Mitochondria are called powerhouses of the cell. Which of the following observations support this statement?
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Explain the term “Energy Currency”. Which substance acts as energy currency in plants and animals?
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If a person is feeling dizzy, glucose or fruit juice is given immediately but not a cheese sandwich Explain.
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When a substrate is being metabolized, why does not all the energy that released in one step. It is released in multiple steps.What is the advantage of step-wise release?
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Respiration requires O2. How did the first cells on the earth manage to survive in an atmosphere that lacked O2?
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It is known that red muscle fibres in animals can work for longer periods of time continuously. How is this possible?
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RuBP carboxylase, PEP carboxylase, Pyruvate dehydrogenase, ATPase, cytochrome oxidase, Hexokinase, Lactate dehydrogenase.
Select/choose enzymes from the list above which are involved in
- Photosynthesis
- Respiration
- Both in photosynthesis and respiration
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How does a tree trunk exchange gases with the environment although it lacks stomata?
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Plasticity in plant growth means that ______.
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Which of the following is not true of intestinal villi?
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Match the two columns and select the correct among options given
| Column I | Column II |
| A. Biomacromolecules of food | i. Alimentary canal and associated gland |
| B. Human digestive system | ii. Embedded in jawbones |
| C. Stomach | iii. Outer wall of visceral organs |
| D. Thecodont | iv. Converted into simple substances |
| E. Serosa | v. J-shaped bag like structure |
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Which one of the following statements is incorrect?
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Match the terms given in Column I with their physiological processes given in Column II and choose the correct answer
| Column I | Column II |
| A. Proximal convoluted tubule | i. Formation of concentrated urine |
| B. Distal convoluted tubule | ii. Filtration of blood |
| C. Henle's loop | iii. Reabsorption of 70 - 80% of electrolytes |
| D. Counter-current mechanism | iv. Ionic balance |
| E. Renal corpuscle | v. Maintenance of concentration gradient in medulla |
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We can produce a concentrated/ dilute urine. This is facilitated by a special mechanism. Identify the mechanism.
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Where does the selective reabsorption of Glomerular filtrate take place?
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The following abbreviations are used in the context of excretory functions, what do they stand for?
GFR
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The following abbreviations are used in the context of excretory functions, what do they stand for?
DCT
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Show the structure of a renal corpuscle with the help of a diagram.
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The function of our visceral organs is controlled by ______.
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The major parts of the human neural system is depicted below. Fill in the empty boxes with appropriate words.
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